Activation button for an electronic faucet



FIG. 1 is a front perspective view of the activation button for an electronic faucet showing my new design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a front elevation view thereof; and,

FIG. 7 is a right side elevation view thereof.

The broken line showing of the faucet in FIGS. 1-7 is for purposes of illustration only and forms no part of the claimed design. 

The ornamental design for an activation button for an electronic faucet, as shown and described. 